Because this Cultural Literacy worksheet on encryption has tended to qualify as high-interest material, I have tagged it as such. Keeping secrets, it turns out, is of particular fascination to adolescents.
Who knew?!
If you find typos in this document, I would appreciate a notification. And, as always, if you find this material useful in your practice, I would be grateful to hear what you think of it. I seek your peer review.
Mark's Text Terminal 